8. CM Punk
CM Punk declares himself "the best in the world" as part of his character gimmick, but he probably legitimately believes that too - and to be fair, when he was screaming the phrase in 2011 and 2012, he really was the best in the world. Punk himself would admit he has an ego: he knows how good he is in the ring and on the mic. He had an ego in the indies, and he definitely has an ego in WWE - he never once considered himself a mid card talent and he was off to Vince McMahon's office demanding better creative within months of being on the main roster. Punk's unabashed rating of himself was enough to rub several of his WWE colleagues up the wrong way when first coming to the company, famously including John Cena. The face of the WWE states in 2012's CM Punk DVD documentary that people responded badly to Punk - "he may have been a king of the indies but in the big leagues he had proved nothing". Punk's good friend and fellow superstar Joey Mercury had this to say in the same documentary - "Punk is unapologetically confident, I didn't like him but I respected him. He was smug and arrogant. He wasn't always the best in the world, but he believed he was". In the end Punk's ego was the driving force that finally got Vince McMahon to pay attention: after years of hassling the boss with creative ideas and fighting for a better slot on the roster, WWE took a chance on Punk as a main eventer in 2011. The chance paid off' CM Punk stepped up to the main events, and is now the second biggest star in WWE behind John Cena.